Oxidation of food and Esters Flashcards
1
Q
How do you slow down the rate of oxidation of food
A
Refrigeration
Packaging under a vacuum or inert gas such as Nitrogen
2
Q
How do Antioxidants work
A
They work by removing free-radicals so they protect food. They donate an electron to the free radical and this forms a stable pair of electrons.
3
Q
Types of antioxidants
A
Vitamin C, Vitamin E and beta-carotene
4
Q
What type of reaction are esters formed in?
A
Condensation reaction
5
Q
Write the equation for the formation of an ester
A
Alcohol + Carboxylic Acid = Ester + Water
6
Q
What is esters functional group?
A
–COO (ester link)
7
Q
How are esters made
A
Go to the diagram in the classroom
8
Q
Why is a water bath used when making esters instead of a bunsen
A
This is because both the product and reactant are flammable
